Sigma 28 45mm f 1 8 dg dn art vs tamron 20 40mm f 2 8 di iii vxd?

The Sigma and the Tamron overlap on Sony E, which is the simplest choice if you shoot Sony full frame. The Sigma 28-45mm f/1.8 DG DN Art is my pick if you want the brighter lens. It's f/1.8 across the whole zoom, so it's the one for dim rooms and blurred backgrounds, and it's also available for L-Mount.

The Tamron 20-40mm f/2.8 Di III VXD goes wider, starting at 20mm, which suits interiors, architecture and landscapes. It's f/2.8, so it gives you less background blur than the Sigma at the same framing. It also works on Nikon Z.

Both are full frame, and neither is stabilised. Check that your body supports third-party autofocus before you buy, as our lens guide explains.

Written by Claude from this site's pages.